crash 8.0.0++ Copyright (C) 2002-2021 Red Hat, Inc. Copyright (C) 2004, 2005, 2006, 2010 IBM Corporation Copyright (C) 1999-2006 Hewlett-Packard Co Copyright (C) 2005, 2006, 2011, 2012 Fujitsu Limited Copyright (C) 2006, 2007 VA Linux Systems Japan K.K. Copyright (C) 2005, 2011, 2020-2021 NEC Corporation Copyright (C) 1999, 2002, 2007 Silicon Graphics, Inc. Copyright (C) 1999, 2000, 2001, 2002 Mission Critical Linux, Inc. Copyright (C) 2015, 2021 VMware, Inc. This program is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Enter "help copying" to see the conditions. This program has absolutely no warranty. Enter "help warranty" for details. NOTE: stdin: not a tty GNU gdb (GDB) 10.2 Copyright (C) 2021 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-pc-linux-gnu". Type "show configuration" for configuration details. Find the GDB manual and other documentation resources online at: . For help, type "help". Type "apropos word" to search for commands related to "word"... please wait... (gathering kmem slab cache data) please wait... (gathering module symbol data) please wait... (gathering task table data) please wait... (determining panic task) KERNEL: /tmp/crash-anaysis.gGdnp/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68883/testresults/sanity-compr-special6-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64/oleg456-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 13:29:35 EDT 2026 UPTIME: 00:07:25 LOAD AVERAGE: 1.60, 1.48, 0.75 TASKS: 405 NODENAME: oleg456-server.virtnet RELEASE: 4.18.0rh8.10-debug VERSION: #2 SMP Mon Jul 14 01:24:22 EDT 2025 MACHINE: x86_64 (2399 Mhz) MEMORY: 4.1 GB PANIC: "BUG: unable to handle kernel NULL pointer dereference at 0000000000000028" PID: 7910 COMMAND: "dp_sync_taskq" TASK: ffff92e320320000 [THREAD_INFO: ffff92e320320000] CPU: 2 STATE: TASK_RUNNING (PANIC) Setting scroll off while initializing PyKdump /usr/local/crash/mpykdump.so: shared object loaded ./lustre.so: shared object loaded mod: cannot find or load object file for sha512_generic module mod: cannot find or load object file for sha512_ssse3 module mod: cannot find or load object file for dm_mod module mod: cannot find or load object file for dm_mirror module mod: cannot find or load object file for dm_log module mod: cannot find or load object file for dm_region_hash module mod: cannot find or load object file for libata module mod: cannot find or load object file for ghash_clmulni_intel module mod: cannot find or load object file for crc32_pclmul module mod: cannot find or load object file for ata_generic module mod: cannot find or load object file for pcspkr module mod: cannot find or load object file for i2c_piix4 module mod: cannot find or load object file for ata_piix module mod: cannot find or load object file for intel_rapl_msr module mod: cannot find or load object file for serio_raw module mod: cannot find or load object file for crct10dif_pclmul module mod: cannot find or load object file for rapl module mod: cannot find or load object file for crc32c_intel module mod: cannot find or load object file for squashfs module mod: cannot find or load object file for dns_resolver module mod: cannot find or load object file for rpcsec_gss_krb5 module mod: cannot find or load object file for sb_edac module mod: cannot find or load object file for intel_rapl_common module mod: cannot find or load object file for nfsv4 module mod: cannot find or load object file for auth_rpcgss module MODULE NAME BASE SIZE OBJECT FILE ffffffffc0630740 libcfs ffffffffc0610000 225280 /tmp/crash-anaysis.gGdnp/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc10523c0 lnet ffffffffc0f77000 1490944 /tmp/crash-anaysis.gGdnp/modules/lnet.ko ffffffffc110d900 ksocklnd ffffffffc10e4000 270336 /tmp/crash-anaysis.gGdnp/modules/ksocklnd.ko ffffffffc126e0c0 obdclass ffffffffc1127000 4415488 /tmp/crash-anaysis.gGdnp/modules/obdclass.ko ffffffffc17ea0c0 ptlrpc ffffffffc155e000 4173824 /tmp/crash-anaysis.gGdnp/modules/ptlrpc.ko ffffffffc19a8880 ptlrpc_gss ffffffffc195a000 524288 /tmp/crash-anaysis.gGdnp/modules/ptlrpc_gss.ko ffffffffc19edc80 fld ffffffffc19db000 126976 /tmp/crash-anaysis.gGdnp/modules/fld.ko ffffffffc1a0dac0 fid ffffffffc19fb000 126976 /tmp/crash-anaysis.gGdnp/modules/fid.ko ffffffffc1a2d740 ec ffffffffc1a1b000 81920 /tmp/crash-anaysis.gGdnp/modules/ec.ko ffffffffc1a6d080 lmv ffffffffc1a30000 372736 /tmp/crash-anaysis.gGdnp/modules/lmv.ko ffffffffc1b0e480 osc ffffffffc1a8c000 790528 /tmp/crash-anaysis.gGdnp/modules/osc.ko ffffffffc1ba6b00 lov ffffffffc1b4e000 552960 /tmp/crash-anaysis.gGdnp/modules/lov.ko ffffffffc1c20b80 mdc ffffffffc1bd6000 466944 /tmp/crash-anaysis.gGdnp/modules/mdc.ko ffffffffc1c65000 mgc ffffffffc1c49000 184320 /tmp/crash-anaysis.gGdnp/modules/mgc.ko ffffffffc1c985c0 obdecho ffffffffc1c77000 225280 /tmp/crash-anaysis.gGdnp/modules/obdecho.ko ffffffffc1d69340 lfsck ffffffffc1caf000 1081344 /tmp/crash-anaysis.gGdnp/modules/lfsck.ko ffffffffc1e38240 lquota ffffffffc1db8000 786432 /tmp/crash-anaysis.gGdnp/modules/lquota.ko ffffffffc1ee4b80 osd_zfs ffffffffc1e79000 659456 /tmp/crash-anaysis.gGdnp/modules/osd_zfs.ko ffffffffc1f7e400 mgs ffffffffc1f1b000 626688 /tmp/crash-anaysis.gGdnp/modules/mgs.ko ffffffffc20300c0 mdd ffffffffc1fb5000 745472 /tmp/crash-anaysis.gGdnp/modules/mdd.ko ffffffffc217a900 mdt ffffffffc206c000 1654784 /tmp/crash-anaysis.gGdnp/modules/mdt.ko ffffffffc22ae900 lod ffffffffc2201000 1064960 /tmp/crash-anaysis.gGdnp/modules/lod.ko ffffffffc2374e40 ofd ffffffffc2306000 688128 /tmp/crash-anaysis.gGdnp/modules/ofd.ko ffffffffc240af80 osp ffffffffc23af000 573440 /tmp/crash-anaysis.gGdnp/modules/osp.ko ffffffffc2572780 lustre ffffffffc243c000 1925120 /tmp/crash-anaysis.gGdnp/modules/lustre.ko lustre_walk_cpus(0, 5, 1) cmd p (*cfs_trace_data[0])[0].tcd.tcd_cur_pages // p (*cfs_trace_data[0])[0].tcd.tcd_pages.next lustre_walk_trace_pages(0, 5, 0xffff92e318c5f008) lustre_walk_cpus(0, 5, 2) cmd p (*cfs_trace_data[0])[0].tcd.tcd_cur_daemon_pages // p (*cfs_trace_data[0])[0].tcd.tcd_daemon_pages.next lustre: Dumped 228 debug pages from type 0 - CPU 0 lustre_walk_cpus(1, 5, 1) cmd p (*cfs_trace_data[0])[1].tcd.tcd_cur_pages // p (*cfs_trace_data[0])[1].tcd.tcd_pages.next lustre_walk_trace_pages(1, 5, 0xffff92e302ce5168) lustre_walk_cpus(1, 5, 2) cmd p (*cfs_trace_data[0])[1].tcd.tcd_cur_daemon_pages // p (*cfs_trace_data[0])[1].tcd.tcd_daemon_pages.next lustre: Dumped 241 debug pages from type 0 - CPU 1 lustre_walk_cpus(2, 5, 1) cmd p (*cfs_trace_data[0])[2].tcd.tcd_cur_pages // p (*cfs_trace_data[0])[2].tcd.tcd_pages.next lustre_walk_trace_pages(2, 5, 0xffff92e3030e1ea8) lustre_walk_cpus(2, 5, 2) cmd p (*cfs_trace_data[0])[2].tcd.tcd_cur_daemon_pages // p (*cfs_trace_data[0])[2].tcd.tcd_daemon_pages.next lustre: Dumped 218 debug pages from type 0 - CPU 2 lustre_walk_cpus(3, 5, 1) cmd p (*cfs_trace_data[0])[3].tcd.tcd_cur_pages // p (*cfs_trace_data[0])[3].tcd.tcd_pages.next lustre_walk_trace_pages(3, 5, 0xffff92e30615cba8) lustre_walk_cpus(3, 5, 2) cmd p (*cfs_trace_data[0])[3].tcd.tcd_cur_daemon_pages // p (*cfs_trace_data[0])[3].tcd.tcd_daemon_pages.next lustre: Dumped 263 debug pages from type 0 - CPU 3 lustre_walk_cpus(0, 5, 1) cmd p (*cfs_trace_data[1])[0].tcd.tcd_cur_pages // p (*cfs_trace_data[1])[0].tcd.tcd_pages.next lustre_walk_cpus(0, 5, 2) cmd p (*cfs_trace_data[1])[0].tcd.tcd_cur_daemon_pages // p (*cfs_trace_data[1])[0].tcd.tcd_daemon_pages.next lustre: Dumped 0 debug pages from type 1 - CPU 0 lustre_walk_cpus(1, 5, 1) cmd p (*cfs_trace_data[1])[1].tcd.tcd_cur_pages // p (*cfs_trace_data[1])[1].tcd.tcd_pages.next lustre_walk_cpus(1, 5, 2) cmd p (*cfs_trace_data[1])[1].tcd.tcd_cur_daemon_pages // p (*cfs_trace_data[1])[1].tcd.tcd_daemon_pages.next lustre: Dumped 0 debug pages from type 1 - CPU 1 lustre_walk_cpus(2, 5, 1) cmd p (*cfs_trace_data[1])[2].tcd.tcd_cur_pages // p (*cfs_trace_data[1])[2].tcd.tcd_pages.next lustre_walk_cpus(2, 5, 2) cmd p (*cfs_trace_data[1])[2].tcd.tcd_cur_daemon_pages // p (*cfs_trace_data[1])[2].tcd.tcd_daemon_pages.next lustre: Dumped 0 debug pages from type 1 - CPU 2 lustre_walk_cpus(3, 5, 1) cmd p (*cfs_trace_data[1])[3].tcd.tcd_cur_pages // p (*cfs_trace_data[1])[3].tcd.tcd_pages.next lustre_walk_cpus(3, 5, 2) cmd p (*cfs_trace_data[1])[3].tcd.tcd_cur_daemon_pages // p (*cfs_trace_data[1])[3].tcd.tcd_daemon_pages.next lustre: Dumped 0 debug pages from type 1 - CPU 3 lustre_walk_cpus(0, 5, 1) cmd p (*cfs_trace_data[2])[0].tcd.tcd_cur_pages // p (*cfs_trace_data[2])[0].tcd.tcd_pages.next lustre_walk_cpus(0, 5, 2) cmd p (*cfs_trace_data[2])[0].tcd.tcd_cur_daemon_pages // p (*cfs_trace_data[2])[0].tcd.tcd_daemon_pages.next lustre: Dumped 0 debug pages from type 2 - CPU 0 lustre_walk_cpus(1, 5, 1) cmd p (*cfs_trace_data[2])[1].tcd.tcd_cur_pages // p (*cfs_trace_data[2])[1].tcd.tcd_pages.next lustre_walk_cpus(1, 5, 2) cmd p (*cfs_trace_data[2])[1].tcd.tcd_cur_daemon_pages // p (*cfs_trace_data[2])[1].tcd.tcd_daemon_pages.next lustre: Dumped 0 debug pages from type 2 - CPU 1 lustre_walk_cpus(2, 5, 1) cmd p (*cfs_trace_data[2])[2].tcd.tcd_cur_pages // p (*cfs_trace_data[2])[2].tcd.tcd_pages.next lustre_walk_cpus(2, 5, 2) cmd p (*cfs_trace_data[2])[2].tcd.tcd_cur_daemon_pages // p (*cfs_trace_data[2])[2].tcd.tcd_daemon_pages.next lustre: Dumped 0 debug pages from type 2 - CPU 2 lustre_walk_cpus(3, 5, 1) cmd p (*cfs_trace_data[2])[3].tcd.tcd_cur_pages // p (*cfs_trace_data[2])[3].tcd.tcd_pages.next lustre_walk_cpus(3, 5, 2) cmd p (*cfs_trace_data[2])[3].tcd.tcd_cur_daemon_pages // p (*cfs_trace_data[2])[3].tcd.tcd_daemon_pages.next lustre: Dumped 0 debug pages from type 2 - CPU 3 lustre: Dumped 950 total debug pages from 4 CPUs to /tmp/crash-anaysis.gGdnp/lustre.bin